Abstract:
A fluidic insert that receives fluid under pressure from a fluid inlet tube and generates a specified spatial distribution of the fluid exiting the insert includes: (1) a body member having top, bottom, front and rear outer surfaces, (2) top and bottom fluidic circuits located, respectively, at least partially within the member's top and bottom surfaces, wherein each of these circuits has at least one power nozzle, an interaction chamber, and an outlet whose exit lies within the member front surface, (3) the bottom fluidic circuit having a portion of its surface area located upstream of the power nozzle and adapted so that it can mate with a fluid inlet tube that supplies fluid to the insert, and (4) an inter-circuit flow passage that allows fluid to flow from the bottom fluid circuit to the top fluid circuit, the bottom end of this passage located such that it is downstream of the point where the inlet tube mates with the bottom circuit and upstream of the bottom circuit's power nozzle, with the top end of this passage located upstream of the top circuit's power nozzle.
Abstract:
A dual pattern nozzle comprises a fluid oscillator of the type which utilizes an obstacle or island in the path of liquid flow to produce a vortex street downstream of the island. A flow splitter is disposed downstream of and sufficiently close to the island to prevent the flow around the island from re-combining before reaching the flow divider, whereupon liquid vortices are alternately issued from each side of the divider. The spinning liquid breaks up into two patterns of droplets, the patterns being directed at respective spaced areas.
Abstract:
A fluidic circuit configured to spray an oscillating pattern of fluid droplets, having an inlet in fluid communication with a source and including a power nozzle with an oscillation chamber having a fluid jet steering section in fluid communication with the power nozzle and having either (a) a first fluid pressure accumulating volume opposite a second fluid pressure accumulating volume or (b) a first fluid jet attachment feature opposing a second fluid jet attachment feature. The fluid jet steering section is in fluid communication with and emits a fluid jet into an oscillation inducing interaction region with opposing first and second side wall ears or features which define an oscillation inducing interaction region in the oscillation chamber for causing the jet of fluid to rhythmically sweep back and forth between the sidewalls in the oscillation chamber and create a distally projecting oscillating spray.
Abstract:
A filtering nozzle assembly or spray head has a conformal nozzle component engineered to generate a filtered spray and configured as a small cylindrical member having a substantially open proximal end and a substantially closed distal end wall with a centrally located discharge orifice defined therein. Optionally, cup-shaped filtered orifice defining member also includes a fluidic circuit's oscillation inducing geometry molded into the cup or directly into the distal surface of a sealing post and the one-piece filter cup provides the fluidic circuit's discharge orifice.
Abstract:
An improved automotive pump assembly includes a volute pumping chamber configured to operably contain a rotatable impeller which, when driven, draws fluid into a fluid inlet and pumps the fluid to and through a fluid outlet. The volute chamber has an exterior sidewall with a constant internal first radius over a first sidewall portion and transitions to a second sidewall portion of increasing radius. The chamber's second sidewall portion defines a first end at a sidewall transition point tangent to the constant radius sidewall segment to define a second end which is tangent to the volute chamber's fluid outlet with a second radius that is greater than the first radius.
Abstract:
A nozzle assembly for connecting to the outlet of a fluid flow source and providing a specified fluid flow spray includes: (a) a connector having a flow passage which extends between its ends, with the connector's upstream end being configured so as to mate with the fluid flow source's outlet, and with this connector passage at a point between its ends having a connector orifice, (b) a nozzle in the form of a fluidic insert configured so as to generate a specified fluid flow spray, (c) a housing having a fluid flow passage which extends between its ends and a rib which extends outwardly from the housing's exterior surface, with the portion of the housing's passage proximate its downstream end being configured so as to allow for the insertion and housing of the fluidic insert, and with the housing's upstream end being configured so as to be rotatably mounted in the connector fluid flow passage's downstream end, and (d) a retention cap having an opening extending between its ends that is configured to allow the housing downstream end to project through the opening, with the cap's upstream end being configured to mate with the housing's rib and the connector downstream end so as to hold the housing and connector in a proximal relationship which aids in preventing fluid flow leakage at their junction.
Abstract:
An improved spray head that is more effective and efficient at providing a wider range of desired spray distributions includes the following elements: (a) a plurality of fluidic oscillators, each oscillator having a fluidic circuit embedded in its top surface, with this circuit forming a path in which a fluid may flow through the oscillator, wherein these oscillators are stacked one on top of the other, with the sides of the oscillators being configured so that they stack such that the flow of fluid from adjoining oscillators in the stack have an angle of divergence between the centerlines of the planes defined by the flows from the outlets of the adjoining oscillators that is in the range of 2-5 degrees, (b) a plurality of cover plates, with each cover plate being proximate the top surface of one of the fluidic oscillators and attached to the oscillator so as to provide a seal against the flow of fluid from the oscillator's fluidic circuit, (c) a carrier assembly having a front and a rear surface and a cavity extending between these surfaces, with this cavity being configured so to receive and hold the stack of fluidic oscillators in the spray head, and (d) a stopper unit that attaches to the assembly's rear surface and seals it against leakage from the assembly's rear surface.